Wili, which do you think might have the greater overall melting effect (or the same) when push comes to shove — The height drop or the sea water
flows under the ice sheet?
Yet, what is driving such strong
flows under the ice?
Not exact matches
Right now it is
flowing under a couple of feet of
ice.
The deep grooves
under the massive
ice sheet could facilitate
flow into the ocean, which suggests sea level rise estimates for this century need to be revised upwards
«The new data set will allow us to check if our ocean models can correctly represent changes in the
flow of warm water
under ice shelves,» he added.
Gravity and
ice pressure force the melt water to
flow, and it collects in the hollows and valleys of the continent
under the
ice.
The pair then went over alternative explanations for the distribution pattern, such as erosion by wind or burial
under material
flowing from
ice volcanoes.
From there, he hypothesized, water
under enormous pressure from the
ice above would
flow in strange ways — horizontally or even uphill, seemingly defying gravity.
She devoured papers on glaciology, memorized equations that dictated how deeply buried water and
ice flow under pressure, and peppered Blankenship's team with questions about how
ice works on our own planet.
«The meltwater feedback cycle
under the
ice shelf will only slow down once the shelf has collapsed, or no more glacial
ice flows in from inland to take its place.
One 2004 NASA - led study found that most of the glaciers they were studying «
flow into floating
ice shelves over bedrock up to hundreds of meters deeper than previous estimates, providing exit routes for
ice from further inland if
ice - sheet collapse is
under way.»
«We plan to chuck a load of biodegradable plastic, or maybe
ice, which has about the same buoyancy as plastic, in front of it and see how much is caught and how much
flows under,» she says.
«Arctic current
flowed under deep freeze of last
ice age, study says.»
«The geology and topography
under the
ice controls how the
ice flows,» said Robin Bell, a geophysicist and professor at Columbia University's Lamont - Doherty Earth Observatory, who was not associated with the research.
Once the
ice melted, the crust began to slowly rebound and the mantle material to
flow back
under the now - iceless area.
I suppose that as the
under side of the glacier melts, the resulting fresh water mixes with the adjacent salt water, making it lighter and causing it to
flow upwards along the
under side of the
ice.
We suggested that, given the documented
flow of water beneath the
ice sheet, perhaps sub-glacial rivers carried in the microbes, and Tranter responded, «People would have laughed at you a decade ago, but there is a river system
under the
ice sheet.
And the
ice began to break, and fall, until the window itself stood clear, and the snow upon the ground had begun to sink and slurry and
flow under the bright goldenness of a perfect awakening... her skin, her skin, from alabaster it reached to peach, rose in her cheeks, cherries on her lips.
Ultimately, the
ice collapses
under its own weight, resulting in a high speed horizontal
flow of an
ice / water slurry.
Alastair notes that increased water vapour will carry more energy to the surface of the glaciers, likewise these increased water
flows over, through and
under the glaciers is also transferring vast amounts of energy into the
ice.
When sufficient layers form to about 50 m depth the
ice becomes plastic
under pressure and
flows.
The water from the melting
ice mixes with the salt water and
flows upward
under the sloping
ice.
This out -
flow of water from
under the
ice pulls in more deep water to melt more
ice from the bottom of the
ice shelf.
Heat
flows across differences in temperatures, yet the winter water temperature
under the
ice is fixed at -2 C. Thus elevated winter air temperatures should actually cause a reduction in heat
flow out of the ocean.
She suggests that future shelf stability studies should consider the role of the ocean's influence, like the effects of warm water pulses
flowing under the Cosgrove
Ice Shelf.
From one day to another the green landscape disappeared
under snow and
ice, which
flowed down to the valley.
If you pump water to this exceedingly remote, freezing place, said Levermann, then in 1,000 years, only about 20 percent of its equivalent will return to the ocean, through the gradual spreading and
flow of Antarctic
ice out toward the sea
under its own massive weight.
Of course as the freshened water
flows up and out on the surface of the ocean, it pulls sea water in
under the
ice.
This
ice may extend much further north and is susceptible to rapid retreat and melt, in particular
under the influence of fall storms that further fragment the
ice cover and enhance ocean to
ice heat
flow.
(11/15/07) «Ban the Bulb: Worldwide Shift from Incandescents to Compact Fluorescents Could Close 270 Coal - Fired Power Plants» (5/9/07) «Massive Diversion of U.S. Grain to Fuel Cars is Raising World Food Prices» (3/21/07) «Distillery Demand for Grain to Fuel Cars Vastly Understated: World May Be Facing Highest Grain Prices in History» (1/4/07) «Santa Claus is Chinese OR Why China is Rising and the United States is Declining» (12/14/06) «Exploding U.S. Grain Demand for Automotive Fuel Threatens World Food Security and Political Stability» (11/3/06) «The Earth is Shrinking: Advancing Deserts and Rising Seas Squeezing Civilization» (11/15/06) «U.S. Population Reaches 300 Million, Heading for 400 Million: No Cause for Celebration» (10/4/06) «Supermarkets and Service Stations Now Competing for Grain» (7/13/06) «Let's Raise Gas Taxes and Lower Income Taxes» (5/12/06) «Wind Energy Demand Booming: Cost Dropping Below Conventional Sources Marks Key Milestone in U.S. Shift to Renewable Energy» (3/22/06) «Learning From China: Why the Western Economic Model Will not Work for the World» (3/9/05) «China Replacing the United States and World's Leading Consumer» (2/16/05)» Foreign Policy Damaging U.S. Economy» (10/27/04) «A Short Path to Oil Independence» (10/13/04) «World Food Security Deteriorating: Food Crunch In 2005 Now Likely» (05/05/04) «World Food Prices Rising: Decades of Environmental Neglect Shrinking Harvests in Key Countries» (04/28/04) «Saudis Have U.S. Over a Barrel: Shifting Terms of Trade Between Grain and Oil» (4/14/04) «Europe Leading World Into Age of Wind Energy» (4/8/04) «China's Shrinking Grain Harvest: How Its Growing Grain Imports Will Affect World Food Prices» (3/10/04) «U.S. Leading World Away From Cigarettes» (2/18/04) «Troubling New
Flows of Environmental Refugees» (1/28/04) «Wakeup Call on the Food Front» (12/16/03) «Coal: U.S. Promotes While Canada and Europe Move Beyond» (12/3/03) «World Facing Fourth Consecutive Grain Harvest Shortfall» (9/17/03) «Record Temperatures Shrinking World Grain Harvest» (8/27/03) «China Losing War with Advancing Deserts» (8/4/03) «Wind Power Set to Become World's Leading Energy Source» (6/25/03) «World Creating Food Bubble Economy Based on Unsustainable Use of Water» (3/13/03) «Global Temperature Near Record for 2002: Takes Toll in Deadly Heat Waves, Withered Harvests, & Melting
Ice» (12/11/02) «Rising Temperatures & Falling Water Tables Raising Food Prices» (8/21/02) «Water Deficits Growing in Many Countries» (8/6/02) «World Turning to Bicycle for Mobility and Exercise» (7/17/02) «New York: Garbage Capital of the World» (4/17/02) «Earth's
Ice Melting Faster Than Projected» (3/12/02) «World's Rangelands Deteriorating
Under Mounting Pressure» (2/5/02) «World Wind Generating Capacity Jumps 31 Percent in 2001» (1/8/02) «This Year May be Second Warmest on Record» (12/18/01) «World Grain Harvest Falling Short by 54 Million Tons: Water Shortages Contributing to Shortfall» (11/21/01) «Rising Sea Level Forcing Evacuation of Island Country» (11/15/01) «Worsening Water Shortages Threaten China's Food Security» (10/4/01) «Wind Power: The Missing Link in the Bush Energy Plan» (5/31/01) «Dust Bowl Threatening China's Future» (5/23/01) «Paving the Planet: Cars and Crops Competing for Land» (2/14/01) «Obesity Epidemic Threatens Health in Exercise - Deprived Societies» (12/19/00) «HIV Epidemic Restructuring Africa's Population» (10/31/00) «Fish Farming May Overtake Cattle Ranching As a Food Source» (10/3/00) «OPEC Has World Over a Barrel Again» (9/8/00) «Climate Change Has World Skating on Thin
Ice» (8/29/00) «The Rise and Fall of the Global Climate Coalition» (7/25/00) «HIV Epidemic Undermining sub-Saharan Africa» (7/18/00) «Population Growth and Hydrological Poverty» (6/21/00) «U.S. Farmers Double Cropping Corn And Wind Energy» (6/7/00) «World Kicking the Cigarette Habit» (5/10/00) «Falling Water Tables in China» (5/2/00) Top of page
Build an
ice cap on that; you get water and silt being extruded out of the basins, even
flowing «uphill»
under that pressure; look at the radar maps, the
ice may have pushed a lot of silt out to its edges over time, you can see the pattern of river drainage channels in the radar imagery.
This is because there is not a topographic low
under the
ice sheet that funnels the
flow.
«Deep channels
under the
ice allow warm water to
flow all the way to the grounding line, where the
ice shelf meets the bedrock,» said Michael Studinger, a researcher with the mission.
Glacier - A mass of land
ice that
flows downhill
under gravity (through internal deformation and / or sliding at the base) and is constrained by internal stress and friction at the base and sides.
From one day to another the green landscape disappeared
under snow and
ice, which
flowed down into the valley.
During the last
ice age, a massive North American
ice sheet placed so much weight on the surface of the planet that the mantle rock began to
flow slowly out and away from underneath the
ice, causing a bulge
under the Chesapeake Bay region.
So there is liquid water
under the
ice sheet and this may be increasing the
flow rate of the
ice.
Christian Schoof, from the University of British Columbia and the study's author, explains that steady
flows of meltwater can be accommodated by existing channels
under the
Ice Sheet, but rapid
flows can not:
The court explained that clearing snow and
ice from sidewalks and fixing potholes is the legal responsibility of the municipality, not the homeowner, subject to two exceptions: 1) if the homeowner is deemed to be an occupier of the sidewalk
under the Act by assuming control of it, such as occurred in Bogoroch and Moody; or 2) if the homeowner allows something from his or her property, such as water, to
flow off it and onto the sidewalk causing injury to persons.